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M9630481.TXT
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1996-02-27
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Document 0481
DOCN M9630481
TI CD4-independent in vivo priming of murine CTL by optimal MHC class
I-restricted peptides derived from intracellular pathogens.
DT 9603
AU Dyall R; Vasovic LV; Molano A; Nikolic-Zugic J; Immunology Program,
Memorial Sloan-Kettering Cancer Center, New; York 10021, USA.
SO Int Immunol. 1995 Aug;7(8):1205-12. Unique Identifier : AIDSLINE
MED/96022642
AB CTL combat intracellular pathogens by killing infected cells. The
molecular targets of their attack are foreign peptides bound to self MHC
encoded class I molecules. Immunization of mice with peptides containing
CTL determinants was shown to elicit CD4-dependent CTL. Here, we have
achieved in vivo CTL priming with naturally processed 8-10 amino acid
long class I-restricted peptides emulsified in an adjuvant. A potent,
reproducible and physiologically relevant response was obtained using
peptides from an intracellular bacterium and five viruses (including
HIV) in two murine MHC haplotypes. This method is suitable for multiple
vaccination, since a 'cocktail' of peptides derived from three pathogens
elicited effector CTL against each pathogen. Most importantly,
peptide-induced CD8+CD4- CTL were CD4(+)-independent. These results have
implications for CTL induction in situations where CD4 T cells are
depleted or compromised, as is the case in HIV infection.
DE Amino Acid Sequence Animal Antigens, Bacterial/IMMUNOLOGY Antigens,
CD4/*PHYSIOLOGY Antigens, Viral/IMMUNOLOGY Cytotoxicity,
Immunologic/GENETICS Epitopes Female Freund's Adjuvant/PHARMACOLOGY
H-2 Antigens/*GENETICS/IMMUNOLOGY Intracellular Fluid/*MICROBIOLOGY
Lymphocyte Transformation/*GENETICS Mice Mice, Inbred C57BL Mice,
Inbred DBA Molecular Sequence Data Peptides/GENETICS/*IMMUNOLOGY
Support, Non-U.S. Gov't Support, U.S. Gov't, P.H.S. T-Lymphocytes,
Cytotoxic/CLASSIFICATION/*IMMUNOLOGY/*MICROBIOLOGY JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).